The 20-year mission of a U.S. military weather satellite came to an abrupt end last month after a power system temperature spike and an apparent explosion.
A SpaceX Falcon 9 rocket made its first foray into deep space this week, depositing a U.S. space weather satellite into an orbit that eventually will reach more than four times farther away than the moon.
NASA's newest Earth-observing satellite will get the dirt on the dirt beneath our feet.
The MESSENGER mission is approaching the end of its operational life, but before it dies, you can help NASA name 5 of Mercury's craters.
Some space analysts wonder if Object 2014-28E could be part of a Russian anti-satellite program.
As if to celebrate tomorrow's landing of Philae on the surface of Comet 67P/Churyumov-Gerasimenko, the European Rosetta mission has detected a mysterious signal coming from the 2.5 mile-wide lump of ice and rock. Continue reading →
The HiRISE camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. Continue reading →
The European Space Agency's Rosetta spacecraft has sent home several spectacular images that show a large pyramid-shaped boulder studding the surface of its target comet.
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